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A comment on Ask HN: What are some cool but obscure data structures you know about?. Parent comment

Re:Ask HN: What are some cool but obscure data structures yo... by asadawadia on Friday July 22, 2022 @09:32AM (#32191711)
Yeah, saves you from thundering herd problems

https://github.com/ben-manes/caffeine cache does something similar by caching the future that gets returned on look-ups if the value is still being computed

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